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  1. 1
    Clarifying the class size question evaluation and synthesis of studies related to the effects of class size, pupil-adult, and pupil-teacher ratios

    Clarifying the class size question evaluation and synthesis of studies related to the effects of class size, pupil-adult, and pupil-teacher ratios von Ryan, Doris W., Greenfield, Thomas Barr

    Veröffentlicht 1976
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  2. 2
    The class size question development of research studies related to the effects of class size, pupil/adult, and pupil/teacher ratios

    The class size question development of research studies related to the effects of class size, pupil/adult, and pupil/teacher ratios von Ryan, Doris W., Greenfield, Thomas Barr

    Veröffentlicht 1975
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